Re: 'could not open session'

Hi,

On Fri, 07 Jul 2006 23:48:33 -0400, Tim Boyer wrote:

I've just done an upgrade from RHEL3 to 4, and have run into the strangest
thing.

I can't log in from the console. Every login attempt with the correct password
gives the message 'could not open session'.

I can ssh in, and enter a username and password. But from there, I can't su to
anybody - root, or another user. 'could not open session'.

Booting to single user mode gives me root, but as soon as I do a su - you
guessed it.

I can do a sudo.

I enabled telnet, just to see what happens:

login: tim
Password:

Permission denied
Connection closed by foreign host.


Permission problem, I think - but _where_??

Not sure whether it may help, but with RHEL4 you have SElinux enabled by
default (however only the targeted policy). But I have been
running into problems by restoring a RHEL4 system by no longer being able
to login, so I had to disable SElinux (and could login).

So try to disable SElinux at the boot prompt by adding a selinux=0 as a
kernel parameter.

hth, gk
.

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